... , the power can still remain 80% after 3 month.3. High security: protection for overcharge, over discharge, overloading, and short circuit.4. Solar charger ... by solar energy with strong light about in 12 to 13 hours,6. when charged by charger,LED will turn on,and the LED will ... on the power bank will turn on, means it is charging your device.3. Disconnect the charger and mobile phone when finish ...